Types of Stem Cells Explained: Embryonic, Adult, iPSC & More

1. Adult or Tissue-Specific Stem Cells

Adult or tissue-specific stem cells are cells that reside in the body tissues of the grown-up body such as bone marrow, fat, blood, and skin. These cells are multipotent, i.e., they can become only a few types of cells that are the derivatives of the same tissue.

Example: Hematopoietic stem cells differentiate into various types of blood cells; mesenchymal stem cells differentiate into bone, cartilage, and fat cells.

Advantages: They are a natural component of the body, participate in the repair and regeneration of damaged tissues, have a lesser probability of causing immune rejection, and do not come with a major ethical problem that is typical of other stem cell types.

2. Induced Pluripotent Stem Cells (iPSCs)

Induced pluripotent stem cells (iPSCs) are essentially cells that have been engineered through reprogramming to behave like embryonic stem cells. The technique makes them developmental cells as they attain the pluripotency, a property that allows them to be converted to almost any other cell type in the human body. They are genetically similar to embryonic stem cells, but are derived from adult cells, not embryos. iPSCs have great potential in the field of science: they enable scientists to understand diseases, drug trials, and patient-specific therapy possibilities, and being non-embryonic in origin, they are free from most of the contentious issues associated with the use of embryonic stem cells.

3. Bone Marrow Stem Cells

Bone marrow stem cells are special cells that live inside bones. They can create new blood cells and help the body heal. Doctors often use them to treat serious blood diseases. Key features: found inside the soft tissue of bones; can make many types of blood cells; help the body repair and grow new cells; used in treatments like bone marrow transplants; important for the immune system.

4. Umbilical Cord Tissue Stem Cells

Umbilical cord tissue stem cells are biologically versatile cells that have the potential to develop into various human tissues. They are a straightforward postnatal collection and can be banked for later therapeutic applications. A large number of people decide to keep them on hand because these cells might be useful in the repair of an area that has been injured or the treatment of a disease at a later time. Key features: collected after birth from the umbilical cord; rich source of mesenchymal stem cells (MSCs); have the potential to regenerate tissue, bone, muscle, and skin; collection is simple and without any risk; preserved for medical use later.

5. Umbilical Cord Blood Stem Cells

These are potent cells which are derived from the umbilical cord of a newborn after delivery. Over the years they have been used to cure different kinds of diseases and maybe in the future, they will be used in medical treatment that we don't know yet. After a baby's birth, the cords connected to the baby are cut and the cells are taken from there. These are cells which are extremely rare and hence valuable, and can possibly be used to help in some blood and immune system disorders. The procedure of collecting these cells is very simple and without causing any pain to a baby, and these cells can be preserved to be used later in medical treatments.